blob: 61fa3de88da80e5573720bdc00c8b464467c47ad [file] [log] [blame]
<!DOCTYPE HTML>
<html lang="en">
<head>
<!-- Generated by javadoc (17) -->
<title>Source code</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="source: package: org.apache.hadoop.hbase.client.locking, class: EntityLock">
<meta name="generator" content="javadoc/SourceToHTMLConverter">
<link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style">
</head>
<body class="source-page">
<main role="main">
<div class="source-container">
<pre><span class="source-line-no">001</span><span id="line-1">/*</span>
<span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
<span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span>
<span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
<span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span>
<span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
<span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
<span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span>
<span class="source-line-no">009</span><span id="line-9"> *</span>
<span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="source-line-no">011</span><span id="line-11"> *</span>
<span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
<span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
<span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
<span class="source-line-no">017</span><span id="line-17"> */</span>
<span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.client.locking;</span>
<span class="source-line-no">019</span><span id="line-19"></span>
<span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span>
<span class="source-line-no">021</span><span id="line-21">import java.util.concurrent.CountDownLatch;</span>
<span class="source-line-no">022</span><span id="line-22">import java.util.concurrent.TimeUnit;</span>
<span class="source-line-no">023</span><span id="line-23">import java.util.concurrent.atomic.AtomicBoolean;</span>
<span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.Abortable;</span>
<span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.util.Threads;</span>
<span class="source-line-no">027</span><span id="line-27">import org.apache.yetus.audience.InterfaceAudience;</span>
<span class="source-line-no">028</span><span id="line-28">import org.slf4j.Logger;</span>
<span class="source-line-no">029</span><span id="line-29">import org.slf4j.LoggerFactory;</span>
<span class="source-line-no">030</span><span id="line-30"></span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.shaded.protobuf.generated.LockServiceProtos.LockHeartbeatRequest;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.shaded.protobuf.generated.LockServiceProtos.LockHeartbeatResponse;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.shaded.protobuf.generated.LockServiceProtos.LockRequest;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.shaded.protobuf.generated.LockServiceProtos.LockService;</span>
<span class="source-line-no">036</span><span id="line-36"></span>
<span class="source-line-no">037</span><span id="line-37">/**</span>
<span class="source-line-no">038</span><span id="line-38"> * Lock for HBase Entity either a Table, a Namespace, or Regions. These are remote locks which live</span>
<span class="source-line-no">039</span><span id="line-39"> * on master, and need periodic heartbeats to keep them alive. (Once we request the lock, internally</span>
<span class="source-line-no">040</span><span id="line-40"> * an heartbeat thread will be started on the client). If master does not receive the heartbeat in</span>
<span class="source-line-no">041</span><span id="line-41"> * time, it'll release the lock and make it available to other users.</span>
<span class="source-line-no">042</span><span id="line-42"> * &lt;p&gt;</span>
<span class="source-line-no">043</span><span id="line-43"> * Use {@link LockServiceClient} to build instances. Then call {@link #requestLock()}.</span>
<span class="source-line-no">044</span><span id="line-44"> * {@link #requestLock} will contact master to queue the lock and start the heartbeat thread which</span>
<span class="source-line-no">045</span><span id="line-45"> * will check lock's status periodically and once the lock is acquired, it will send the heartbeats</span>
<span class="source-line-no">046</span><span id="line-46"> * to the master.</span>
<span class="source-line-no">047</span><span id="line-47"> * &lt;p&gt;</span>
<span class="source-line-no">048</span><span id="line-48"> * Use {@link #await} or {@link #await(long, TimeUnit)} to wait for the lock to be acquired. Always</span>
<span class="source-line-no">049</span><span id="line-49"> * call {@link #unlock()} irrespective of whether lock was acquired or not. If the lock was</span>
<span class="source-line-no">050</span><span id="line-50"> * acquired, it'll be released. If it was not acquired, it is possible that master grants the lock</span>
<span class="source-line-no">051</span><span id="line-51"> * in future and the heartbeat thread keeps it alive forever by sending heartbeats. Calling</span>
<span class="source-line-no">052</span><span id="line-52"> * {@link #unlock()} will stop the heartbeat thread and cancel the lock queued on master.</span>
<span class="source-line-no">053</span><span id="line-53"> * &lt;p&gt;</span>
<span class="source-line-no">054</span><span id="line-54"> * There are 4 ways in which these remote locks may be released/can be lost:</span>
<span class="source-line-no">055</span><span id="line-55"> * &lt;ul&gt;</span>
<span class="source-line-no">056</span><span id="line-56"> * &lt;li&gt;Call {@link #unlock}.&lt;/li&gt;</span>
<span class="source-line-no">057</span><span id="line-57"> * &lt;li&gt;Lock times out on master: Can happen because of network issues, GC pauses, etc. Worker thread</span>
<span class="source-line-no">058</span><span id="line-58"> * will call the given abortable as soon as it detects such a situation.&lt;/li&gt;</span>
<span class="source-line-no">059</span><span id="line-59"> * &lt;li&gt;Fail to contact master: If worker thread can not contact mater and thus fails to send</span>
<span class="source-line-no">060</span><span id="line-60"> * heartbeat before the timeout expires, it assumes that lock is lost and calls the abortable.&lt;/li&gt;</span>
<span class="source-line-no">061</span><span id="line-61"> * &lt;li&gt;Worker thread is interrupted.&lt;/li&gt;</span>
<span class="source-line-no">062</span><span id="line-62"> * &lt;/ul&gt;</span>
<span class="source-line-no">063</span><span id="line-63"> * Use example: &lt;code&gt;</span>
<span class="source-line-no">064</span><span id="line-64"> * EntityLock lock = lockServiceClient.*Lock(...., "exampled lock", abortable);</span>
<span class="source-line-no">065</span><span id="line-65"> * lock.requestLock();</span>
<span class="source-line-no">066</span><span id="line-66"> * ....</span>
<span class="source-line-no">067</span><span id="line-67"> * ....can do other initializations here since lock is 'asynchronous'...</span>
<span class="source-line-no">068</span><span id="line-68"> * ....</span>
<span class="source-line-no">069</span><span id="line-69"> * if (lock.await(timeout)) {</span>
<span class="source-line-no">070</span><span id="line-70"> * ....logic requiring mutual exclusion</span>
<span class="source-line-no">071</span><span id="line-71"> * }</span>
<span class="source-line-no">072</span><span id="line-72"> * lock.unlock();</span>
<span class="source-line-no">073</span><span id="line-73"> * &lt;/code&gt;</span>
<span class="source-line-no">074</span><span id="line-74"> */</span>
<span class="source-line-no">075</span><span id="line-75">@InterfaceAudience.Public</span>
<span class="source-line-no">076</span><span id="line-76">public class EntityLock {</span>
<span class="source-line-no">077</span><span id="line-77"> private static final Logger LOG = LoggerFactory.getLogger(EntityLock.class);</span>
<span class="source-line-no">078</span><span id="line-78"></span>
<span class="source-line-no">079</span><span id="line-79"> public static final String HEARTBEAT_TIME_BUFFER = "hbase.client.locks.heartbeat.time.buffer.ms";</span>
<span class="source-line-no">080</span><span id="line-80"></span>
<span class="source-line-no">081</span><span id="line-81"> private final AtomicBoolean locked = new AtomicBoolean(false);</span>
<span class="source-line-no">082</span><span id="line-82"> private final CountDownLatch latch = new CountDownLatch(1);</span>
<span class="source-line-no">083</span><span id="line-83"></span>
<span class="source-line-no">084</span><span id="line-84"> private final LockService.BlockingInterface stub;</span>
<span class="source-line-no">085</span><span id="line-85"> private final LockHeartbeatWorker worker;</span>
<span class="source-line-no">086</span><span id="line-86"> private final LockRequest lockRequest;</span>
<span class="source-line-no">087</span><span id="line-87"> private final Abortable abort;</span>
<span class="source-line-no">088</span><span id="line-88"></span>
<span class="source-line-no">089</span><span id="line-89"> // Buffer for unexpected delays (GC, network delay, etc) in heartbeat rpc.</span>
<span class="source-line-no">090</span><span id="line-90"> private final int heartbeatTimeBuffer;</span>
<span class="source-line-no">091</span><span id="line-91"></span>
<span class="source-line-no">092</span><span id="line-92"> // set to a non-zero value for tweaking sleep time during testing so that worker doesn't wait</span>
<span class="source-line-no">093</span><span id="line-93"> // for long time periods between heartbeats.</span>
<span class="source-line-no">094</span><span id="line-94"> private long testingSleepTime = 0;</span>
<span class="source-line-no">095</span><span id="line-95"></span>
<span class="source-line-no">096</span><span id="line-96"> private Long procId = null;</span>
<span class="source-line-no">097</span><span id="line-97"></span>
<span class="source-line-no">098</span><span id="line-98"> /**</span>
<span class="source-line-no">099</span><span id="line-99"> * Abortable.abort() is called when the lease of the lock will expire. It's up to the user decide</span>
<span class="source-line-no">100</span><span id="line-100"> * if simply abort the process or handle the loss of the lock by aborting the operation that was</span>
<span class="source-line-no">101</span><span id="line-101"> * supposed to be under lock.</span>
<span class="source-line-no">102</span><span id="line-102"> */</span>
<span class="source-line-no">103</span><span id="line-103"> EntityLock(Configuration conf, LockService.BlockingInterface stub, LockRequest request,</span>
<span class="source-line-no">104</span><span id="line-104"> Abortable abort) {</span>
<span class="source-line-no">105</span><span id="line-105"> this.stub = stub;</span>
<span class="source-line-no">106</span><span id="line-106"> this.lockRequest = request;</span>
<span class="source-line-no">107</span><span id="line-107"> this.abort = abort;</span>
<span class="source-line-no">108</span><span id="line-108"></span>
<span class="source-line-no">109</span><span id="line-109"> this.heartbeatTimeBuffer = conf.getInt(HEARTBEAT_TIME_BUFFER, 10000);</span>
<span class="source-line-no">110</span><span id="line-110"> this.worker = new LockHeartbeatWorker(lockRequest.getDescription());</span>
<span class="source-line-no">111</span><span id="line-111"> }</span>
<span class="source-line-no">112</span><span id="line-112"></span>
<span class="source-line-no">113</span><span id="line-113"> @Override</span>
<span class="source-line-no">114</span><span id="line-114"> public String toString() {</span>
<span class="source-line-no">115</span><span id="line-115"> final StringBuilder sb = new StringBuilder();</span>
<span class="source-line-no">116</span><span id="line-116"> sb.append("EntityLock locked=");</span>
<span class="source-line-no">117</span><span id="line-117"> sb.append(locked.get());</span>
<span class="source-line-no">118</span><span id="line-118"> sb.append(", procId=");</span>
<span class="source-line-no">119</span><span id="line-119"> sb.append(procId);</span>
<span class="source-line-no">120</span><span id="line-120"> sb.append(", type=");</span>
<span class="source-line-no">121</span><span id="line-121"> sb.append(lockRequest.getLockType());</span>
<span class="source-line-no">122</span><span id="line-122"> if (lockRequest.getRegionInfoCount() &gt; 0) {</span>
<span class="source-line-no">123</span><span id="line-123"> sb.append(", regions=");</span>
<span class="source-line-no">124</span><span id="line-124"> for (int i = 0; i &lt; lockRequest.getRegionInfoCount(); ++i) {</span>
<span class="source-line-no">125</span><span id="line-125"> if (i &gt; 0) sb.append(", ");</span>
<span class="source-line-no">126</span><span id="line-126"> sb.append(lockRequest.getRegionInfo(i));</span>
<span class="source-line-no">127</span><span id="line-127"> }</span>
<span class="source-line-no">128</span><span id="line-128"> } else if (lockRequest.hasTableName()) {</span>
<span class="source-line-no">129</span><span id="line-129"> sb.append(", table=");</span>
<span class="source-line-no">130</span><span id="line-130"> sb.append(lockRequest.getTableName());</span>
<span class="source-line-no">131</span><span id="line-131"> } else if (lockRequest.hasNamespace()) {</span>
<span class="source-line-no">132</span><span id="line-132"> sb.append(", namespace=");</span>
<span class="source-line-no">133</span><span id="line-133"> sb.append(lockRequest.getNamespace());</span>
<span class="source-line-no">134</span><span id="line-134"> }</span>
<span class="source-line-no">135</span><span id="line-135"> sb.append(", description=");</span>
<span class="source-line-no">136</span><span id="line-136"> sb.append(lockRequest.getDescription());</span>
<span class="source-line-no">137</span><span id="line-137"> return sb.toString();</span>
<span class="source-line-no">138</span><span id="line-138"> }</span>
<span class="source-line-no">139</span><span id="line-139"></span>
<span class="source-line-no">140</span><span id="line-140"> @InterfaceAudience.Private</span>
<span class="source-line-no">141</span><span id="line-141"> void setTestingSleepTime(long timeInMillis) {</span>
<span class="source-line-no">142</span><span id="line-142"> testingSleepTime = timeInMillis;</span>
<span class="source-line-no">143</span><span id="line-143"> }</span>
<span class="source-line-no">144</span><span id="line-144"></span>
<span class="source-line-no">145</span><span id="line-145"> @InterfaceAudience.Private</span>
<span class="source-line-no">146</span><span id="line-146"> LockHeartbeatWorker getWorker() {</span>
<span class="source-line-no">147</span><span id="line-147"> return worker;</span>
<span class="source-line-no">148</span><span id="line-148"> }</span>
<span class="source-line-no">149</span><span id="line-149"></span>
<span class="source-line-no">150</span><span id="line-150"> public boolean isLocked() {</span>
<span class="source-line-no">151</span><span id="line-151"> return locked.get();</span>
<span class="source-line-no">152</span><span id="line-152"> }</span>
<span class="source-line-no">153</span><span id="line-153"></span>
<span class="source-line-no">154</span><span id="line-154"> /**</span>
<span class="source-line-no">155</span><span id="line-155"> * Sends rpc to the master to request lock. The lock request is queued with other lock requests.</span>
<span class="source-line-no">156</span><span id="line-156"> * Call {@link #await()} to wait on lock. Always call {@link #unlock()} after calling the below,</span>
<span class="source-line-no">157</span><span id="line-157"> * even after error.</span>
<span class="source-line-no">158</span><span id="line-158"> */</span>
<span class="source-line-no">159</span><span id="line-159"> public void requestLock() throws IOException {</span>
<span class="source-line-no">160</span><span id="line-160"> if (procId == null) {</span>
<span class="source-line-no">161</span><span id="line-161"> try {</span>
<span class="source-line-no">162</span><span id="line-162"> procId = stub.requestLock(null, lockRequest).getProcId();</span>
<span class="source-line-no">163</span><span id="line-163"> } catch (Exception e) {</span>
<span class="source-line-no">164</span><span id="line-164"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">165</span><span id="line-165"> }</span>
<span class="source-line-no">166</span><span id="line-166"> worker.start();</span>
<span class="source-line-no">167</span><span id="line-167"> } else {</span>
<span class="source-line-no">168</span><span id="line-168"> LOG.info("Lock already queued : " + toString());</span>
<span class="source-line-no">169</span><span id="line-169"> }</span>
<span class="source-line-no">170</span><span id="line-170"> }</span>
<span class="source-line-no">171</span><span id="line-171"></span>
<span class="source-line-no">172</span><span id="line-172"> /**</span>
<span class="source-line-no">173</span><span id="line-173"> * @param timeout in milliseconds. If set to 0, waits indefinitely.</span>
<span class="source-line-no">174</span><span id="line-174"> * @return true if lock was acquired; and false if waiting time elapsed before lock could be</span>
<span class="source-line-no">175</span><span id="line-175"> * acquired.</span>
<span class="source-line-no">176</span><span id="line-176"> */</span>
<span class="source-line-no">177</span><span id="line-177"> public boolean await(long timeout, TimeUnit timeUnit) throws InterruptedException {</span>
<span class="source-line-no">178</span><span id="line-178"> final boolean result = latch.await(timeout, timeUnit);</span>
<span class="source-line-no">179</span><span id="line-179"> String lockRequestStr = lockRequest.toString().replace("\n", ", ");</span>
<span class="source-line-no">180</span><span id="line-180"> if (result) {</span>
<span class="source-line-no">181</span><span id="line-181"> LOG.info("Acquired " + lockRequestStr);</span>
<span class="source-line-no">182</span><span id="line-182"> } else {</span>
<span class="source-line-no">183</span><span id="line-183"> LOG.info(String.format("Failed acquire in %s %s of %s", timeout, timeUnit.toString(),</span>
<span class="source-line-no">184</span><span id="line-184"> lockRequestStr));</span>
<span class="source-line-no">185</span><span id="line-185"> }</span>
<span class="source-line-no">186</span><span id="line-186"> return result;</span>
<span class="source-line-no">187</span><span id="line-187"> }</span>
<span class="source-line-no">188</span><span id="line-188"></span>
<span class="source-line-no">189</span><span id="line-189"> public void await() throws InterruptedException {</span>
<span class="source-line-no">190</span><span id="line-190"> latch.await();</span>
<span class="source-line-no">191</span><span id="line-191"> }</span>
<span class="source-line-no">192</span><span id="line-192"></span>
<span class="source-line-no">193</span><span id="line-193"> public void unlock() throws IOException {</span>
<span class="source-line-no">194</span><span id="line-194"> Threads.shutdown(worker.shutdown());</span>
<span class="source-line-no">195</span><span id="line-195"> try {</span>
<span class="source-line-no">196</span><span id="line-196"> stub.lockHeartbeat(null,</span>
<span class="source-line-no">197</span><span id="line-197"> LockHeartbeatRequest.newBuilder().setProcId(procId).setKeepAlive(false).build());</span>
<span class="source-line-no">198</span><span id="line-198"> } catch (Exception e) {</span>
<span class="source-line-no">199</span><span id="line-199"> throw ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">200</span><span id="line-200"> }</span>
<span class="source-line-no">201</span><span id="line-201"> }</span>
<span class="source-line-no">202</span><span id="line-202"></span>
<span class="source-line-no">203</span><span id="line-203"> protected class LockHeartbeatWorker extends Thread {</span>
<span class="source-line-no">204</span><span id="line-204"> private volatile boolean shutdown = false;</span>
<span class="source-line-no">205</span><span id="line-205"></span>
<span class="source-line-no">206</span><span id="line-206"> public LockHeartbeatWorker(final String desc) {</span>
<span class="source-line-no">207</span><span id="line-207"> super("LockHeartbeatWorker(" + desc + ")");</span>
<span class="source-line-no">208</span><span id="line-208"> setDaemon(true);</span>
<span class="source-line-no">209</span><span id="line-209"> }</span>
<span class="source-line-no">210</span><span id="line-210"></span>
<span class="source-line-no">211</span><span id="line-211"> /** Returns Shuts down the thread clean and quietly. */</span>
<span class="source-line-no">212</span><span id="line-212"> Thread shutdown() {</span>
<span class="source-line-no">213</span><span id="line-213"> shutdown = true;</span>
<span class="source-line-no">214</span><span id="line-214"> interrupt();</span>
<span class="source-line-no">215</span><span id="line-215"> return this;</span>
<span class="source-line-no">216</span><span id="line-216"> }</span>
<span class="source-line-no">217</span><span id="line-217"></span>
<span class="source-line-no">218</span><span id="line-218"> @Override</span>
<span class="source-line-no">219</span><span id="line-219"> public void run() {</span>
<span class="source-line-no">220</span><span id="line-220"> final LockHeartbeatRequest lockHeartbeatRequest =</span>
<span class="source-line-no">221</span><span id="line-221"> LockHeartbeatRequest.newBuilder().setProcId(procId).build();</span>
<span class="source-line-no">222</span><span id="line-222"></span>
<span class="source-line-no">223</span><span id="line-223"> LockHeartbeatResponse response;</span>
<span class="source-line-no">224</span><span id="line-224"> while (true) {</span>
<span class="source-line-no">225</span><span id="line-225"> try {</span>
<span class="source-line-no">226</span><span id="line-226"> response = stub.lockHeartbeat(null, lockHeartbeatRequest);</span>
<span class="source-line-no">227</span><span id="line-227"> } catch (Exception e) {</span>
<span class="source-line-no">228</span><span id="line-228"> e = ProtobufUtil.handleRemoteException(e);</span>
<span class="source-line-no">229</span><span id="line-229"> locked.set(false);</span>
<span class="source-line-no">230</span><span id="line-230"> LOG.error("Heartbeat failed, releasing " + EntityLock.this, e);</span>
<span class="source-line-no">231</span><span id="line-231"> abort.abort("Heartbeat failed", e);</span>
<span class="source-line-no">232</span><span id="line-232"> return;</span>
<span class="source-line-no">233</span><span id="line-233"> }</span>
<span class="source-line-no">234</span><span id="line-234"> if (!isLocked() &amp;&amp; response.getLockStatus() == LockHeartbeatResponse.LockStatus.LOCKED) {</span>
<span class="source-line-no">235</span><span id="line-235"> locked.set(true);</span>
<span class="source-line-no">236</span><span id="line-236"> latch.countDown();</span>
<span class="source-line-no">237</span><span id="line-237"> } else</span>
<span class="source-line-no">238</span><span id="line-238"> if (isLocked() &amp;&amp; response.getLockStatus() == LockHeartbeatResponse.LockStatus.UNLOCKED) {</span>
<span class="source-line-no">239</span><span id="line-239"> // Lock timed out.</span>
<span class="source-line-no">240</span><span id="line-240"> locked.set(false);</span>
<span class="source-line-no">241</span><span id="line-241"> abort.abort("Lock timed out.", null);</span>
<span class="source-line-no">242</span><span id="line-242"> return;</span>
<span class="source-line-no">243</span><span id="line-243"> }</span>
<span class="source-line-no">244</span><span id="line-244"></span>
<span class="source-line-no">245</span><span id="line-245"> try {</span>
<span class="source-line-no">246</span><span id="line-246"> // If lock not acquired yet, poll faster so we can notify faster.</span>
<span class="source-line-no">247</span><span id="line-247"> long sleepTime = 1000;</span>
<span class="source-line-no">248</span><span id="line-248"> if (isLocked()) {</span>
<span class="source-line-no">249</span><span id="line-249"> // If lock acquired, then use lock timeout to determine heartbeat rate.</span>
<span class="source-line-no">250</span><span id="line-250"> // If timeout is &lt;heartbeatTimeBuffer, send back to back heartbeats.</span>
<span class="source-line-no">251</span><span id="line-251"> sleepTime = Math.max(response.getTimeoutMs() - heartbeatTimeBuffer, 1);</span>
<span class="source-line-no">252</span><span id="line-252"> }</span>
<span class="source-line-no">253</span><span id="line-253"> if (testingSleepTime != 0) {</span>
<span class="source-line-no">254</span><span id="line-254"> sleepTime = testingSleepTime;</span>
<span class="source-line-no">255</span><span id="line-255"> }</span>
<span class="source-line-no">256</span><span id="line-256"> Thread.sleep(sleepTime);</span>
<span class="source-line-no">257</span><span id="line-257"> } catch (InterruptedException e) {</span>
<span class="source-line-no">258</span><span id="line-258"> // Since there won't be any more heartbeats, assume lock will be lost.</span>
<span class="source-line-no">259</span><span id="line-259"> locked.set(false);</span>
<span class="source-line-no">260</span><span id="line-260"> if (!this.shutdown) {</span>
<span class="source-line-no">261</span><span id="line-261"> LOG.error("Interrupted, releasing " + this, e);</span>
<span class="source-line-no">262</span><span id="line-262"> abort.abort("Worker thread interrupted", e);</span>
<span class="source-line-no">263</span><span id="line-263"> }</span>
<span class="source-line-no">264</span><span id="line-264"> return;</span>
<span class="source-line-no">265</span><span id="line-265"> }</span>
<span class="source-line-no">266</span><span id="line-266"> }</span>
<span class="source-line-no">267</span><span id="line-267"> }</span>
<span class="source-line-no">268</span><span id="line-268"> }</span>
<span class="source-line-no">269</span><span id="line-269">}</span>
</pre>
</div>
</main>
</body>
</html>